expanding memory

so we all know that the Wii can do alot. people have made it so we can run custom games and even backups.

now my question is this:

if we are able to do all of this, why cant we make an Cios to expand the memory of the Wii. so what i mean is make it able to read bigger cards like 4,8,16,32 and so on. then we can maybe incorporate this into some homebrew like game dumping. we can dump a whole game onto 1 SD card with out using the Mass Storage in the back.

the wii only will read 2 gig's even if those load, and the Homebrew channel might, but thats it, if u want something like that, then u might have to wait, since im sure it will have a high brick rate, and such to get

ok then i can do
wifi but it downloads at 50-100kbs i know it sucks
when i do a 2gb in the front sd slot it goes at 500kbs
when i do a mass storage with my 8gb in the back it goes at like 50-100
anyone know if their is a way to speed it up?